Knife-sharpener.



No. 839,877; PATENTBD JAN. 1, 1907.

B. NICHOLS.

KNIFE SHARPENBR. nrmouxon FILED 1mm 3, 1905.

. V I Invenlr, 1 Z KQ. B

enjamin M'choZAj BENJAMIN NICHOLS, OF SEATTLE, WASHINGTON.

KNlFE-SHARPENER.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed June 3, 1905- Serial No. 263,512.

To (tZZ whom, it may concern:

Be it known that I, BENJAMIN NIoHoLs, of Seattle, in the county of King, State of Washin ton, have made certain new and useful mprovements in KnifeSharpeners, of which the following is a full, clear, and exact description.

The object of this invention is the construction of an improved knife-sharpener which shall be capable of sharpening both faces of a knife-edge simultaneously and shall at the same time be adjustable to different degrees of keenness.

Referring to the drawings forming part of this specification, Figure 1 is a side view of a knife-sharpener embodying my invention. Fig. 2 is a top view of the same. Fig. 3 is a side view of one of the blade-holders, showing a sharpener-blade therein. Fig. 4 is a similar view of one of said blade-holders with the blade removed. Fig. 5 is a sectional view of the adjusting device for the sharpener-blades. Fig. 6 is a side view of the same. Fig. 7 is a detail view of a section of the sharpener-stem.

The handle 1 is fixed at one end of the stem 4, and at an intermediate point of said stem is the eye 6. In said eye is fixed the pintle 29, upon which are pivotally mounted the sharpener-blade holders 21, said pintle being secured in the eye 6 by a suitable head formed thereon similar to the head on the pin 32 (shown in Fig. 5) and at its opposite end being upset in the usual manner to keep the outer holder 30 from coming off. In the edges of said holders nearest the handle are fixed the sharpener-blades 20, preferably made of hardened steel, the means for fixing the same in place consisting of the lugs 22, 23, 24, 25, 26, and 27, formed integral with each holder and bent over the said blades, as shown in Fig. 3. In the tail ends of said holders are the inclined slots 31, within which plays the pin 32, carried by the springclip 33, the latter being retained in position by the extended stem-section 7 penetrating the holes 34 in said clip. Said holes are adapted to permit said stem to slide freely therein when the clip members are pressed toward each other but when the latter spring apart said holes grip said stem strongly, and so retain the clip, and hence the pin 32, at any desired point. By sliding the said clip toward and from the eye 6 the pin 32 forces the slots 31 to change the angular positions of the holders 21 and to change in a similar degree the angles of the sharpenerblades 20.

In using this instrument the knife to be sharpened rests one side against the stem 4, and so causes the sharpening action given to its edge by the blades 20 to be perfectly true at both faces.

As shown in Fig. 7, the center of the eye 6 is located at one side of the stem 4, thereby bringing the juncture of the two blades 20 at one side also of the stem. This enables the knife to present both faces of its edge to the sharpener-blades simultaneously, where if the blade crossing were along the same plane as the longitudinal line of the stem there could be no simultaneous sharpening action upon both faces of the knife-edge.

As will be evident upon inspection, this knife-sharpening device is very economical to manufacture and can be set in practically an instant to grind any desired keenness of edge.

What I claim as my invention, and for which I desire Letters Patent, is as follows, to wit:

1. The combination with a longitudinallyextended handle designed to be grasped in one hand and to be held in a direction pointing away from the users body, of a pair of sharpener-blades pivoted together to the outer portion of the handle extension; the intersection of said blades being substantially coincident with the upper side of said extended handle; whereby a knife held in the other hand of the user and drawn along said extended handle is brought into engagement with said blades and correctly sharpened thereby.

2. The combination with a holding member including a longitudinally-extended stem, a pair of sharpenerholders pivoted to said stem, each having an oblique slot, a pin entering bothsaid slots, and a spring-clip holding said pin and loosely penetrated by said stem; said clip being disposed to grip said stem when free to separate.

3. The combination of the handle, a wire stem projecting therefrom and having an eye, a pintle held by said eye, a pair of sharpener-holders pivoted upon said pintle, each havin an oblique slot in its tail end, sharp- I Vention I have hereunto set my hand this 8th ener-b ades carried by said holders and disday of May, 1905. posed to cross each other at an acute angle, a

pin entering both said slots, and a spr1ng- BENJAMIN NICHOLS 5 clip supporting said pin and penetrated by Witnesses:

said stem. 0. H. BLACK,

In testimony that I claim the foregoing in- A. B. COOK. 

